公开(公告)号：WO2015024062A8

公开(公告)日：2016-02-25

申请号：PCT/AU2014000832

申请日：2014-08-22

Applicant: UNIV SOUTH AUSTRALIA

Inventor： GRANT ALEXANDER JAMES ,  LECHNER GOTTFRIED ,  POLLOK ANDRE ,  MCKILLIAM ROBERT GEORGE ,  LAND INGMAR RUDIGER ,  HALEY DAVID VICTOR LAWRIE ,  LAVENANT MARC PIERRE DENIS

IPC: H03M13/00 ,  G06F11/10

CPC classification number: H04L1/0041 ,  H03M5/145 ,  H03M13/09 ,  H03M13/1102 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/31 ,  H03M13/6325 ,  H03M13/6356 ,  H04L1/00 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/0071

Abstract: The invention relates to method and apparatus for improving the performance of communication systems using Run Length Limited (RLL) messages such as the existing Automatic Identification System (AlS). A binary data sequence is Forward Error Correction (FEC) coded and then the sequence is compensated, for example by bit-erasure, so that either bit-stuffing is not required, or a bit stuffer will not be activated to ensure that the coded sequence meets the RLL requirement. Various embodiments are described to handle different architectures or input points for the FEC encoder and bit erasure module. The bit erasure module may also add dummy bits to ensure a RLL compliant CRC or to selectively add bits to a reserve buffer to compensate for later bit stuffing in a header. Additional RLL training sequences may also be added to assist in, receiver acquisition.

Abstract translation: 本发明涉及使用诸如现有自动识别系统（AlS）的运行长度有限（RLL）消息来改善通信系统性能的方法和装置。 二进制数据序列是前向纠错（FEC）编码的，然后例如通过比特擦除来补偿序列，使得不需要任何一个比特填充，或者一个填充填充器将不被激活以确保编码序列 符合RLL要求。 描述了各种实施例来处理用于FEC编码器和位擦除模块的不同架构或输入点。 比特擦除模块还可以添加伪比特以确保符合RLL的CRC，或者选择性地将比特添加到保留缓冲器中以补偿头中稍后的比特填充。 还可以添加额外的RLL训练序列以辅助接收器采集。

公开(公告)号：WO2016090411A8

公开(公告)日：2017-07-06

申请号：PCT/AU2015000743

申请日：2015-12-09

Applicant: UNIV SOUTH AUSTRALIA

Inventor： HALEY DAVID VICTOR LAWRIE ,  COWLEY WILLIAM GEORGE ,  BUETEFUER JOHN LAWRENCE ,  GRANT ALEXANDER JAMES ,  LECHNER GOTTFRIED ,  POLLOK ANDRE ,  MCKILLIAM ROBERT GEORGE ,  LAND INGMAR RUDIGER ,  LAVENANT MARC PIERRE DENIS ,  CHEN YING

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04L5/0007 ,  H04L5/0037 ,  H04L25/0204 ,  H04L25/03343 ,  H04L27/2657 ,  H04W72/044

Abstract: Methods and apparatus for communication between terminals and an access node in a multiuser multicarrier communications network are described. The access node may be a satellite access node. Terminals are configured to perform initial estimation and tracking of channel offsets and to estimate channel offsets for future packets to be transmitted by the terminal. In some embodiments the channel offsets comprise mobility related channel offsets due to the relative movement between the access node and the plurality of terminals. Transmissions from the terminals to the access node are pre-compensated for the channel offsets, so that the aggregate signal received by the access node occupies a bandwidth greater or equal to the maximum signal bandwidth of any individual terminal. Terminal transmissions may overlap in frequency and time on the ground, but arrive orthogonally at the access node.

Abstract translation: 描述了用于多用户多载波通信网络中的终端和接入节点之间的通信的方法和设备。 接入节点可以是卫星接入节点。 终端被配置为执行信道偏移的初始估计和跟踪，并估计将由终端发送的未来分组的信道偏移量。 在一些实施例中，信道偏移包括由于接入节点和多个终端之间的相对移动而导致的与移动性相关的信道偏移。 从终端向接入节点的传输对信道偏移进行预补偿，使得接入节点接收到的聚合信号占用大于或等于任何单独终端的最大信号带宽的带宽。 终端传输可能在地面上的频率和时间上重叠，但在接入节点处正交地到达。